LESによるスプリッター板付物体周りの渦放出特性の再現性

概要

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A large-eddy simulation(LES) technique has been applied to prediction of separated and reattaching flow past a two-dimensional body with blunt trailing edge with or without vortex shedding. The LES method used is a conventional one with Smagorinsky eddy viscosity model and the test case is the bluff-body near wake a vortex-shedding controlling splitter plate measured by Bearman. The characteristics of the test flow change dramatically as the body geometry changes and is a very severe test case for a simulation method. The numerical computation with rather coarse grid, that is manageable by workstations, show that the various flow properties including mean and turbulence quantities, as well as vortex-shedding and its suppression mechanisms, are well predicted. The method appears to sufficient for practical design application.
社団法人日本建築学会の論文
1999-10-30